The operation is off (enable to restart by remote controller). The operating LED will be blinking 5 times. The operating LED will be blinking 4 times.Ĭommunication error (serial communication). The operating LED will be blinking twice. Heat sink sensor detected high temp.(85☌).Check the sensor of Condenser pipe sensor.Condenser pipe sensor detected high temp.(65☌).Normal resistor: 5K£2 / at 25☌ (Unplugged).Normal voltage : 2.5Vdc / at 25☌ (plugged).Normal resistor: 10K£2 / at 25☌ (Unplugged).Normal voltage : 4.5Vdc / at 25☌ (plugged).Normal resistor: 200K£2 / at 25☌ (Unplugged).Check the discharge pipe sensor for Cons.Check the install condition for over load.Check the discharge pipe sensor for INV.Check the component of “IPM", detection parts.Check the connection of comp wire “U,V,W”.Malfunction of current detection circuit. An instant over current in the U,V,W phase.Transmission circuit of indoor PCB is abnormal.Transmission circuit of outdoor PCB is abnormal.The communication line is shorted at GND.The GND1,2 is not connected at main GND.The connector for transmission is disconnected.The connection of wire(Drain pump/ Float switch).Normal resistor: 5K£2/ at 25☌ (Unplugged) Normal voltage : 2.5Vdc / at 25☌ (plugged) ![]() Normal resistor: 10KS2/ at 25☌ (Unplugged) Outdoor brushless direct current (BLDC) fan motor lock errorĬommunication Error Between PFC Micom and INV Micomģ-Phase Wrong Wring of Outdoor Unit (Reverse Phase/Omission of Phase) Heat sink thermistor has disconnected or has shorted out ![]() Outdoor unit inverter compressor PCB heat sink temperature is too highĬondenser coil pipe thermistor temperature is too low Outdoor unit condenser coil temperature is too high Outdoor unit printed circuit board (PCB) EPROM check sum error Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted outĬommunication failure from outdoor unit to indoor unit Outdoor unit suction line thermistor is disconnected or shorted out Middle thermistor of outdoor unit condenser coil is disconnected or shorted out Outdoor Air Sensor is disconnected or shorted out Inverter Compressor Discharge Pipe (D-Pipe) OverheatĬT Sensor Error Thermistor is disconnected or shorted outĭ-Pipe Sensor INV is disconnected or shorted out Inverter compressor DC voltage is too highĬurrent-to-current transformer (CT) thermistor is too low PSC Fault Current to inverter compressor between AC and DC converter circuit too high DC Peak (IPM Fault) Compressor DC voltage was too highĬurrent Transformed (CT2) error Alternating current (AC) input too highĭC Comp Position Error (not providing rotation), Locking
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